Valve.



q PATENTED AUG. 4 'J. F. ROBERTSON.

j No; 895302. I

VALVE. APPLICATION PLED HAB; 3, 1906.

Wesasrr let opening 4, which bearing is JOHN F. ROBERTSON, OF BELLEVUE, PENNSYLVANIA.

VALVE.

Specification of Letters fatenti Patented Aug. 4, 1908.

Application med March 3, 1906. Serial No. 304423.

Ta aZl whom it may concern:

Be it known that. I, Jon'v F RoBEnrsoN, a citizen of the United States, residing at Bellevue, in the county of Allegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Valves, of which the following is a specification, reference bein had therein to the accompanying drawing, ibrming part of the specication, in which Figure 1. is a longitudinal vertical section through my improved valve. Fig. 2. is a cross section on the line II. II. of Fig. 1. Fig. 3. is a similar section on the line III. III. My invention refers to improvements in valves and has for its objects to provide a valve in which the seat may be readily inserted or removed and positively held in place by means of an inserted lining barrel. Also to means whereby the valve may be engaged by a removing tool, means for providing a bearing for the valve stein, and various other features" of advantage and improvement as shall be more fully hereinafter described.

Referring to the drawings, 2 represents the body or shell of the valve which may be of any usual or referred design having an inlet opening 3 ang outlet opening 4 and an intervening valve controlled passage.

5 is the valve seat having a base iiange 6 and an upwardly extendin annular rm or seat 7 against which bears ile sealing disk 8, constituting the movable closing element. The valve seat 5 rests by its flange 6 upon a corresponding bearing seat 9 formed in the interior of the casing as shown, annularly located around the upper portion of the outroperly faced or finished to make a fluid-tig it seat. The interior diameter of outlet o ening 4, and for thc purpose of providing c earance for the insertion of a hook or other removing instrul ment to d slodge or lift the seat 5, is provided with an annular recess 10 immediately below the bearing face 9. Such clearance'may be provided by increasing the' diameter of the outlet opening 4 at its upper portion below said seat as shown, or by making one or more individual reces es extending underneath the body of seat 5 for the same purpose.

The interior of easing 2 is rovided with a lining 11 which bears at its ottom against the up er outer edge of ilange 6, extending tliroug out the interior te the other end of the case, and which is held innnovably in position by the cap 12, bolted to the main case as shown, or secured in any other suitable manner. The lining 11 is conveniently made of a section of brass or Copper tubin having an opening 13 at one end corresponding with the inlet opening 3, and. is set within the unfinished cavlty of case 2, thereby providing a smooth finished non-corrodible interior throughout from end to end.

For the purpose of positively locating the lining 11 in position so that opening 13 will L F register with opening 3 I employ one or more lips 14 bent over at the top and adapted to seat in corresponding recesses in the upper portion of the casing as clearly shown, thus preventing turning or movement of the lining shell.

15 is an adjustable valve carrier or holder I in which is mounted the valve disk 8 loosely mounted, b means of a transverse supporting pin 16, lbngitudinal clearance being provided around the pin, said piu being employed merely to prevent detachment of the I disk. The disk is set loosely as stated in the under ortion of carrier 15 to facilitate proper independent seating upon the seat 7, and is rovided with a centrally extended lug 17 ttin within a corresponding socket in'the middle portion of the carrier. The abutting face of the lug 17 bears centrally against the inner face of the receiving cavity endwise, and may be rounded as shown to further facilitate automatic seating of the valve under pressure of the stern.

The valve and carrier are adjusted towards or from the seat by means of a turning stern 18 extending through a suitable stu-ffing box 19 located at the upper extended end of cap 12, and provided with the .usual turning handle 20. The lower end of stein 18 is ihreaded as at 21 and is engaged by the downwardly extendin 'interiorly threaded stern bearing 22, by w liich construction the stern is amply supported at each end, thus insuring alinement. An especial feature of advantage of such construction is that the threaded bearing is adjacent to the movable valve and when the valve is, located in use in other than vertical position, as for instance horizontal, the roper seating of the valve is always insure Ordinarily, where essarily of considerable ength and liable to with valves of larger sizes. .The va ve car- A rier is mounted at the end of the valve stein by means of a thimble 23 tapped inte the 4 carrier as shown and providing a bearing for a langed terminal 24 of the stein, the carrier 15 being snitably recesscd as at 25 for clearance.

The construction and mode of operation of my invention will be readily understood from the foregoing description. It is simple and chea in construction, not liable to get out ofort er,'and willperform its functions in a satisfactory and ctlieient manner.

A particular feature of advantage of my invention is that the valve seat and iu fact all of the interior ortions of the valve may be readily removet without the necessity of disconnecting the-body of the valve from the inlet and outlet connections, and this advantage will be ap reciated by all those who are familiar witii this class of valves.

Changes and modiiications may be made by the skilled mechanic in the design, proportions or arrangement ofv the device, but all such changes are .to be considered as within the scope of the following claims.

What I claim is:

1. In a valve, the combination of a casing provided with an inlet and an outlet opening, an annular seat, a concentric clearance openin immediately below said seat, a removable valve seat having 'a llat flanged bottom seated upon said annular seat and extending inwardly beyond the wall of said clearance opening and upwardly thereabove to provide a valve-bearing terminal, and an internal lining shell of thin sheet metal bearing against the Hange of the seat and held in position by the cap of the valve casing, substantially as set forth.

2. In a valve, the combination of a casing provided with an inlet and an outlet opening, an annular seat, a conccntric clearance opening immediately below said seat, a removable valve seat having a flat flanged bottom seated upon said annular-seat and extending inwardly beyond the wall of said clearance opening and upwardly thereabove to provide a valve-bearing terminal, and an internal lining shell of thin sheet metal provided vrith an aperture corresponding with the inlet, opening, bearing by its end against the liange o the valve casing, substantially as set forth. 3. In a valve, the'combination of a casing provided with an iulet and an outlet opening, an annular seat, a concentr-ic clearance openin immediately below said seat, a removsble va ve Seat having a flat flanged bottom seated u on said annular seat anttesgtending inwar ly beyond the wall of saidxclearance opening and upwardly thereabove tdprpvide a valve-bearing terminal, and an internalliningshell of tlnn sheet metal provided vrith an aperturc corresponding with the inlet opening, bearing by its end against the tlange the seat, and held in position by the cap of of'the seat, and held in position by the cap of the valve casing, and means for preventing rotative movement of the shell, substantially as set forth. i

l 4. Ina valve, the combination ota'casing. ;prov1ded with an mlet and an outletopcning,

an annular seat, a concentric clearance openin immediatelybelow said seat, aremovable vadves'eat having a flat flanged bottom seated upon said annular seat and extending inwardly beyond the wall of said clearance opening and upwardly thereabove to provide a valve-bearin terminal, and an internal lin-,

ing shell of thin sheet metal provided with an aperture corresponding with the inlet opening, bearing by its end against the flange of the seat, and held in osition by the cap of the valve casing, said ining shell having a projecting lng o'r lip bent over at the top and engaging a-corresponding recess in the casing to prevent rotation, substantially as set forth.

5. In a valve, thc combination with a casing having an inlet and an ou tlet opening and a valve seat, and a stem-supporting cap having an outwardly extending stuliing box and an inwardly extending threaded stein bearing; of an adjusting stern mounted therein provided with a terminal l'ange, a valve carrier embracing said terminal tlange and provided with a threaded adjusting thimble engaging the lange and a recessed bottom, and a valve disk loosely secured n the carrier and having a central extension provided with a convex terininal bearing against the recessed bottom for automatic adjustment against the valve seat, substantially as set forth.

6. In a valve, the combination of a casin having an inlet and an outlet opening, sai outlet opening being circumferentially enlarged and terminating with a Hat annular-ly arranged bearing face, a removable valve seat having a flat langed bottom seated on said face'and extending inwardlybeyond the enlargement of the outlet o eningand having an upwardly extending va ve-bearing terminal, a stein-supporting cap secured on the I casing having an outwardly extending stuttmg box and an mwardly extending threadedstein bearing, an internal lining shell of thin metal forming the mner wall of the casmg apertured Wltll the mlet opening and bearing at one end against the flanged bottom of the valve seat and secured m position at the other end by the cap, a threaded adjusting stenr mounted in said stutlng box and threaded bearing provided with a ternnnal lange, a loosely mounted valve carrier having an adjusting device engagmg said tlange, and a valve disk loosely mounted in the valve carrier for automatic adjustment against the valve seat, substantially as set forth.

7. In a valve, the combination of a casing having an inlet and outlet opening, said outlet opening being circumferentially enlarged and terminating with a flat annularly arranged be'rin face, a removable valve se 't having a la t ilanged bottom seated on said L face and extending inwardly beyond the enlargement of the outlet opening and having 5' an upw'ardly extending vnlve-bearing terminal, a stein-supporting cap secured on the casing having nnoutwardly extending stirliing box and an inwardly extending threeded stern bearing, an internal lining sheil of thin 10 metal forming the inner wall of the easing apertured with the inlet openingand bearing at one end against the langed bottom of the valve seat and secured in position Lt the other end by the cep,'a threaded adjusting 15 stem mounted in said stuHing box and threaded bearing provided with a terminal flange, a loosely mounted valve carrier having an adjusting device engaging said flange and provided with a, reeessed bottom, and a.

Valve disk'loosely mounted in the carrier and having a'central extension provided with a convex terminal bearing against the recessed bottom for automatic adjustment against the valve seat, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

- JOHN F. ROBERTSON. In presence of-- p CHAsS. LEPLEY, C. M. CLARKE. 

